I have 2 usernames

Hi there Hayden C.

I am Lumie and I would love to assist you today.

I am so sorry you are having issues with your Xbox username.

Account Synchronization Delay
Sometimes, it can take a bit of time for your new Xbox username to sync across all services, including games and apps. Although it's been 8 days, synchronization issues might still be the cause. Here are some steps to check:

Log out of your Xbox account and then log back in. This can trigger a sync with Microsoft's servers and update your username.
Restart Your Console: Power cycling your Xbox can help in resolving minor sync issues. Turn off the console completely, unplug it for a few minutes, and then restart it.

Clear Cache

Clearing the cache on your Xbox can help to force a refresh of stored data and might resolve display issues with your username:

Hold the power button for 10 seconds to turn off the console, unplug it from the power source, wait for a minute, and then plug it back in and turn it on.

Update Games and Apps
Some games and apps might not update your username until they are restarted or updated. Make sure all your games and apps are up to date:

Go to My games & apps on your Xbox.
Check for updates and install any available updates.

Check User Profile Settings
Ensure your new username is correctly displayed on your profile:

Go to Settings on your Xbox.
Navigate to Account > Sign-in, security & passkey.
Make sure your new username is displayed correctly.

Verify In-Game Account Settings
Some games might require you to change your username within their specific settings or profiles. Check the settings within each game to ensure your username is updated.

Possible System Update
Occasionally, system updates may need to be applied for all changes to take effect. Check if there are any pending updates for your console:

Go to Settings > System > Updates.

Cross-Platform Issues
If you're playing games that support cross-platform play, make sure your username is updated on all platforms. Sometimes, your display name might not update across platforms immediately.

Username Display Settings
Some settings within Xbox Live allow you to display different usernames for privacy or compatibility reasons. Ensure there are no settings overriding your new username:

Go to Settings > Account > Privacy & online safety.
Check any settings that might affect your display name.

I hope this helps.

Let me know if I can be of any further assistance. -Lumie

Well not yet, I have 2-3 days left and I was hoping to fix this problem so I don't lose my username.

Thanks for your patience and time here in our community mate. I appreciate.

Take care!

To do that, I am afraid you would need to have a paid gamertag change on https://social.xbox.com/ChangeGamerTag and change your gamertag which will require you to enter only 12 characters. After you have selected an available gamertag, on the next step, there's an option to customize your gamertag from the old system. You can change it from there or just leave it as is to match with your main gamertag.

By the way, you can learn more about Gamertag FAQ here https://support.xbox.com/en-US/help/account-pro...

Is there any way to make it only show the new one?